Centrifugal machine.



N0. 652,594. l Patented .lune 26, |900. W. H. COOK.

CENTRIFUGAL MACHINE.A (Application led Apr. 24, 1900.)

No. 652,594. Patented June 26,1900.

W.H.CO0K

CENTBIFUGAL MACHINE.

(Application led Apr. 24, 1900.)

(No Model.) 2Sheets-Sheet 2.

/W 6 CIIIIIJIII'IIOGAIIIII' WMQ" /BJ m MT5 l' NITE ATES VALTER H. COOK, OF NEV ORLEANS, LOUISIANA.

CENTRIFUGAL MACHINE.

SPECIFICATION forming part of Letters Patent No. 652,594, dated J une `26, 1900. Application filed April 24, 1900. Serial No. 14,146. (No model.)

T0 a/ZZ whom. t may concern: l

Be it known that I, WALTER H. COOK, a citizen of the United States, residing at New Orleans, in the parish of Orleans and State of Louisiana, have invented new and useful Improvements in Centrifugal Separators, of which the following is a specification.

My invention relates to centrifugal separators for eliminating one or more of the constituents of fluid or other substances.

My purpose is to provide a centrifugal separator which shall be capable of treating fluids, as well as substances which are not fluid, but which have been either naturally or artificially brought into a condition suitable for treatment by granulation, pulverization, or other preparatory process.

It is my object also to provide means for automatically feeding non-liquid substances to the separator, for accurately controlling the rate of their feed, for regulating the passage of material through the separator, and for making its volume and movement substantially uniform at all points in the separator.

It is a further purpose of my invention to provide a centrifugal separator with simple means for removing deposits or accumulations of separated material from its interior, this feature of my invention being capable by its construction of giving a forward movement to the material treated and adapted by a simple adjustment to permit the deposit on the inner surface of the rotating. member of one or more of the constituents of a substance under treatment suitable for a filtering material, said deposit being maintained by my invention at a predetermined uniform thickness as long as its utilization as a filtering medium is required.

It is my object also to provide simple and efficient means whereby the separator may be quickly and thoroughly cleansed without arresting its rotation.

My invention also comprises other novel and useful features, all of which will be fully described in the following specification and then particularly pointed out and defined in the claims.

For the purposes of the follwing descripM tion reference is had to the accompanying drawings, in which-h Figure 1 is a central vertical section taken longitudinally, showing a centrifugal separator constructed in accordance with my invcntion. Fig. 2 is a sectional elevat-ion showing a modified construction of the mechanism for operating the scraper. Fig. 3 is a detail view of the scraper, showing the means for carrying the material treated forward and the vertical guide for the vibrating end of the scraper. Fig. 4 is a section on the line 4 4in Fig. 3.

The reference-numeral 1 in said drawings indicates a stationary outer cylinder, its ends supported by brackets 2, which form part of posts or uprights 3. The latter form journalsupports for hollow or tubular shafts 4 and 5, projecting from the ends 6 of a drum or cylinder 7, having numerous perforations S. The drum 7 is usually constructed with two concentric perforated walls having an intermediate layer i) of filtering material. The outside diameter of this drum is suitably less than theinterior of the outer cylinder l. The tubular shafts 4 and 5 are provided with driving-pulleys 4a and 5 and enter the ends of the cylinder l through openings 10. The upper part 1 of said outer cylinder is hinged to the lower part, so that it can be opened, and said upper part is of less length than the lower, so that any ma terial thrown off by the revolution' of the drum 7 and adhering to the ends of said upper part will fall into the lower portion.

pressed at the center, thereby giving the Wall on each side a downward inclination toward the lowest point,where a pipe 12 is provided having a lateral branch 13. The pipe 12is provided below said lateral branch with a valve 14, and a similar valve 15 is placed in the branch 13.

Vithin the tubular shafts 4 and 5, respectively, are arranged cylindrical boxes 16 and 17, supported on posts 18 and having no contact with the shafts through which they pass. These boxes project a suitable distance into the ends of the drum 7 and extend beyond the outer ends of the shafts 4 and 5. Their closed inner or adjacent ends are connected by a bracebar 19, which stiffens and aids in supporting saidv boxes. The box 1G is pro vided with a central interior shaft 20, upon The lower wall of the outer cylinder is de- Y IOO which is a spiral conveyer 2l, driven by a pulley 22 on the vprojecting outer end of 1. the shaft 20. At or near the outer end of said box is a hopper' opening or inlet 23 inv the upper side. The box 17, which is longer and extends into the end of the drum 7 farther than the box 16, is also provided with anf interior shaft 24, which carries a spiral conveyer 25, driven by a pulley 26 on the projecting outer end of the shaft 24. This box i' is provided with a receiving-opening 27 in its upper Wall, extending from a point at ornear; the inner end of the box to the inner end of the drum 7, or thereabout. This opening receives the material remaining in the drum 7 after A'a separation has been effected, while` the hopper or inlet vopening 23 .in the box 16T receives the material fed to the separator,`' into which it passes through a feed-opening@ 23 `at the inner end of said box 16. The box; 1,7 is provided with an outlet 29 at its outer@ end, through which `is discharged the mate-g rial ientering said box 17 from the interior of 2 the d-rum 7 through the receiving-opening 27. 'Upon the inner end of the box 16, close toi the end of the drum 7, is a fixed upright 30,; its upper end lying close to 'the inner 'face of the drum 7. Upon said upper end is pivotalzly-mou-nteda scraper-bar 3l, which extends; nearly tothe other end of the drum, parallel, g ornearly so, with the cylindrical wall. Upon the inner end of the box 17 is a rigid uprghti 32, provided at its upper end with a vertical;L slot 33, in which ythe scraper-'bar 3l is freetoi move. A pitman 34, pivoted to said bar andi con-nected'to a crank 35 on the shaft 24, gives a rapid vibration on recprocation in a verti-fi cal plane to the scraper-bar.' Upon the 4up-i per side of the latter are mounted a series of deflecting-platcs 36, which lie at an angle .tolf the bar, as shown in Fig. 3 of the drawingsjg and in suchla direction that as the drum 7 l revolves the material contained therein andi carried around with saidldrum will strike saidi deflector-plates 36 and be carried by their anguflar arrangement vtoward the end of the drum 7, at which it is discharged. The vibration of the bar 31 not only prevents any; tendency of the particles to cohere and keeps@ the mass in a granulated or pulver-ized condition, but as said bar is separated from the; cylindrical wall of the drum 7 by a spaceg which increases constantly though gradually as the exit end of the drum is approached iti is evident' that a correspondinglygreater@ quantity of the material in the drum 7 Willj pass between the scraper-bar 31 and the cylindrical Wall .of said drum at each revolution of the latter. Thus the mass of the material in the drum will have a constantly and uni-. formly retarded feed movement as it ap preaches the point where it is discharged It is thus subjected more frequently to the.` action of the separator as the constituentsf eliminated fromit are removed. In this manner a very complete separation can be effectcd by the automatic action of the apparatus.

The functions of the scraper-bar can be regulated by giving it a greater or less range of vibration. This may be done in several ways, one of which is shown in Fig. 2. In this construction the pitman 34 has an adj ust-able connection with the scraper-bar, so that it `may engage it at various distances from the pivotal support on the upright 30. The nearer the point of engagement approaches this pivotal support the greater will be the range of vibration of the scraper-bar. The pitman is operated by a crank on the shaft 24, as already described; but to permit its longitudinal adjustment on the scraperbar 3l the end of the pitman which engages the crank 35 is provided Vwith a .ring 37., as shown in Figs. 3 and 4, from the lower .inner face-of which an arm 33 rises, its upper end having avcollar 39,`whch loosely engages the crank.

A pipe 40 enters one end of the drum 7 and connects with a pipe 41, .having numerous perforations 42, which lie suitably near fthe inner face of the drum. A separate pipe 43, entering the outer cylinder 1 near oneend, connects with a perforated pipe 44, arranged close to the outer face of thedrum 7. These pipes are supplied with steam, compressed air, or hot water, preferably the latter, from any convenient source. NVhe'n the apparatus needs cleaning, it is notstoppedfbut the supply of material lto the drum 7 ceases. By opening a cock 45 in the `pipe 40 water or steam is sprayed into the drum, its action being aided `by the revolution of the ylatter. The exterior ofthe drum and the interior of the cylinder 1 are washed by means of the-pipe 43, which has a valve 46, the operation being assisted and expedited by the rapid rotation of the drum 7.

It will vbe understood that when liuids are treated by this apparatus the spiral conveyers 21 and 25 are unnecessary.

I do not confine myself to the use `of any special lfiltering medium nor to the use of a double cylindrical wall for the idrum 7, with a filtering material'packed between. I may use ordinary filter-press cloth wrapped around the drum 7 and held by wire or by flexible perforated plates. Moreover, there are some Waters which contain undesirable material, although when separated it forms an excellent filtering medium. 'In treatingsueh waters the scraper-bar31 can be so adjusted .as to allow a suitable deposit of such material to form on the interior of the drum 7, the further IOC IIO

Vto discharge itself at the discharge end of the apparatus. When there is a sufficient quantity in the apparatus, then the water can be turned on. The filtering medium being held in its position by the centrifugal motion of the machine and the water to be filtered is thereby forced by centrifugal force through the filtering medium, and all foreign accumulations are caused to be worked od and out of the apparatus bythe mechanism already described.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is-

1. A centrifugal separator, having an outer cylinder, an inner perforated drum on hollow shafts, cylindrical boxes lying in said shafts and extending into the ends of the drum, and spiral conveyers in said boxes, one of the latter being provided with a hopper-opening in its outer end and the other with a receivingopening in its inner end, substantially as described. y

2. In a centrifugal separator, the combination with an outer cylinder and an inner perforated drum on tubular shafts which extend into the ends of said drum, of spiral conveyers arranged to revolve in fixed boxes in said tubular shafts and adapted to feed material in at one end and discharge the same at the other end of said drum, substantially as described.

In a centrifugal separator, the combination with a perforated drum capable of rota tion, of a scraper-bar pivoted at one end in said drum near the perforated wall, and means for rapidly vibrating` the other end of said scraper-bar toward and from the perforated wall, substantially as described.

4. In a centrifugal separator, the combination with a perforated drum and with means for rotating the same, of a scraper-bar pivoted at one end within said drum means for vibrating the other end of fsaid bar toward and from the perforated wall of the drum, and deliector-plates arranged on the upper face of said scraper-bar at an angle to the plane of revolution, substantially as described.

5. In a centrifugal separator, the combination with a perforated drum, and with means for revolving the same, of a scraper-bar in said drum pivoted at one end to a fixed support, means for giving the other end of said bar a variable range of vibration, and lfixed deflector-plates arranged on the upper face of the scraper-bar at an angle to the plane of revolution of the drum, substantially as described.

6. In a centrifugal separator', the combination with a perforated drum and with means for revolving the same on a horizontal axis of a scraper-bar pivoted at one end to a fixed support in said drum, means for giving vibration to the other end in a vertical plane, and deflector-plates mounted on the upper face of said bar at an angle to the plane of revolution of the drum, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses. Y

VALTER II. COOK.

Witnesses:

LAURENCE JANIN, PORTER PARKER.. 

